New Toy
We got a new toy for the trip, a Pentax underwater camera. This is in our Las Vegas pool before the trip. (The new toy also comes with a GPS receiver, which is cools but eats up batteries.)

I’m quite happy with it: I had two spare batteries and managed to not completely use up the last one before we got back to the grid (the raft company promised an option to charge but it was not working on our trip). I did get worried about having enough power left for Lava Falls so I was more conservative when I was down to the last battery and even turned off the GPS for a while (which I now regret as turning the lat-long into a Google Map is pretty easy).